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((Capacity (Terabytes used (% of configured), number of files, BLocks,…
Capacity
Terabytes used (% of configured)
number of files
BLocks
Name Node Capacity
Data node capacity
Usage
HDFS
Memory
CPU utilisation over time
Disk utilisation (is this capacity??)
Running
Jobs running
Maps vs. Reduce job
NameNodes
Node/Load balance
Data node block statistics
number of available cores vs. number of running processes
i/o throughput
(this is most likely source of bottlenecks)
Ingress
network i/o
disk i/o
Moving data around
mapreduce shuffle??
read/write